by Kingsbury J.M
Published in Information bulletin (USA). no. 104 (1994)

by Kanter D.G
Published in Information bulletin (USA). no. 213 (1992)

by Kurtz M.E, Neill S.W
Published in Information bulletin (USA). no. 195 (1991)

by Collins J.F, Adleman M.I
Published in Information bulletin (USA). no. 211 (1988)

Published in Information bulletin (USA). no. 133 (1988)

by Collender R.N, Erickson A
Published in Agriculture information bulletin (USA). no. 722 (1996)

Published in Agriculture information bulletin (USA). no. 620 (1995)

by Hansen B, Hahn W.F, Weimar M.R
Published in Agriculture information bulletin (USA). no. 693 (1994)

by Frazao E
Published in Agriculture information bulletin (USA). no. 705 (1994)

by Gallo A.E
Published in Agricultural information bulletin (USA). no. 706 (1994)

by Petrulis M.F, Sommer J, Hines F.K
Published in Agriculture information bulletin (USA). no. 678 (1993)

Published in Agriculture information bulletin (USA). no. 650 (1992)

by Runyan J.L
Published in Agriculture information bulletin (USA). no. 652 (1992)

by Lipton K.L
Published in Agriculture information bulletin (USA). no. 625 (1991)

by McBride W.D
Published in Agriculture information bulletin (USA). no. 623 (1991)

by Mathews K.H, Pelly R.A, Glaze D.H
Published in Agriculture information bulletin (USA). no. 617 (1991)

by Ahearn M
Published in Agriculture information bulletin (USA). no. 599 (1990)

by Smith M.S, Roth D.M
Published in Agriculture information bulletin (USA). no. 425 (1990)

by Morehart M.J, Johnson J, Banker D.E
Published in Agriculture information bulletin (USA). no. 616 (1990)

by Crom Richard J
Published in Agriculture information bulletin (USA). no. 545 (1988)